gills definition
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Definition of âgillâ - English Dictionary gill noun (FISH) › [ 1  C usually plural ] the organ through which fish and other water creatures breathe. › 2  us ​ [ C ] a measure of liquid that is equal to 0.142 litres or a quarter of a pint. › 3  the organ through which fish and other water creatures breathe.
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Gill A gill (/ɡɪl/) is a respiratory organ found in many aquatic organisms that extracts dissolved oxygen from water and excretes carbon dioxide. The gills of some species, such as hermit crabs, have adapted to allow respiration on land provided they are kept moist.he concentration of oxygen in water is lower than air and it diffuses more slowly. In fresh water, the dissolved oxygen content is approximately 8 cm 3 /L compared to that of air which is 210 cm 3 /L.
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- Full Definition of BEAK. 1. a: the bill of a bird; especially: a strong short broad bill b (1) : the elongated sucking mouth of some insects (as the true bugs) (2) : any of various rigid projecting mouth structures (as of a turtle) c: the human nose.2. a pointed structure or formation: a: a metal-pointed beam projecting from the bow especially of an ancient galley for piercing an enemy ship b: the spout of a vessel c: a continuous slight architectural projection ending in an arris — see molding illustration d: a process suggesting the beak of a bird.
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- Gas exchange in bony fish: water is drawn into the mouth and passed over the gills. Counter-current flow mechanism: in the gills, the flow of blood is in the opposite direction to the flow of water across the gills. This means that blood is continually meeting fresh water with a higher percentage saturation of oxygen.as exchange in bony fish: water is drawn into the mouth and passed over the gills. Counter-current flow mechanism: in the gills, the flow of blood is in the opposite direction to the flow of water across the gills. This means that blood is continually meeting fresh water with a higher percentage saturation of oxygen.
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- The gills function like the lungs of a fish, so large numbers of capillaries in these structures function to supply oxygen/get rid of waste carbon dioxide for the organism.he gills function like the lungs of a fish, so large numbers of capillaries in these structures function to supply oxygen/get rid of waste carbon dioxide for the organism.
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- Crayfish are aquatic crustaceans and have gills. 2 people found this useful. Edit. Share to: 1  From Water Dogs to Salamanders Water dogs are one of the more unusual members of the reptile family because they are actually an aquatic animal.he gills are the equivalent of our lungs. Basically they absorb Oxygen from the water flowing over them and at the … same time they remove Carbondioxide and other nasties they don't need or want from the blood stream.
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- DO is a very important indicator of a water body's ability to support aquatic life. Fish breathe by absorbing dissolved oxygen through their gills. Oxygen enters the water by absorption directly from the atmosphere or by aquatic plant and algae photosynthesis.
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cavity locule, loculus - a small cavity or space within an organ or in a plant or animal. lumen - a cavity or passage in a tubular organ; the lumen of the intestine. socket - a bony hollow into which a structure fits. pulp cavity - the central cavity of a tooth containing the pulp (including the root canal) cranial orbit, eye socket, orbital cavity, orbit - the bony cavity in the skull containing the eyeball. buccal cavity - the cavity between the jaws and the cheeks. antrum - a natural cavity or hollow in a bone.
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- Learn about this topic in these articles: bivalves. ...posterior respiratory gills have enlarged and moved to lie lateral to the body as paired folds, or demibranchs. Further increases in surface area have been achieved by folding the platelike gill lamellae into plicae.
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lung (lŭng) 1. Either of two spongy organs in the chest of air-breathing vertebrate animals that serve as the organs of gas exchange. Blood flowing through the lungs picks up oxygen from inhaled air and releases carbon dioxide, which is exhaled. Air enters and leaves the lungs through the bronchial tubes.
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- In bony fish (Teleosts): Gills lie in a branchial cavity covered by the operculum: Usually two sets of four holobranchs. Each holobranch consists of two hemibranchs(‘half gill’): Anterior and posterior. Hemibranchs consist of a row of long filaments (primary lamellae) with semilunar folds (secondary lamellae).chematic of the teleost fish gill. Secondary lamellae Retrieved from the World Wide Web (October 2012) http://www.biology-resources.com/drawing-fish-gill-filaments.html This is a close up diagram of the gill lamellae; you can see the long primary lamellae here and the secondary lamellae branching off.
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Gill However, more complex or more active aquatic organisms usually require a gill or gills. Gills usually consist of thin filaments of tissue, branches, or slender, tufted processes that have a highly folded surface to increase surface area.
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Bony Fishes Class Osteichthyes includes all bony fishes. Like all fishes, Osteichthyes are cold-blooded vertebrates that breathe through gills and use fins for swimming. Bony fishes share several distinguishing features: a skeleton of bone, scales, paired fins, one pair of gill openings, jaws, and paired nostrils.
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- The organ that enables most aquatic animals to take dissolved oxygen from the water. It consists of a series of membranes that have many small blood vessels. Oxygen passes into the bloodstream and carbon dioxide passes out of it as water flows across the membranes.
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- Function of fish gills. To preform breathing for the orgainsm that lives under water. (Listen everyone!... go to National Geographic for kids, or the regular one to find a mor … e specific and general info. on this subject. To find it type on google national geographic or National geographic.he gill filaments are the hair-like structures on the gills which absorb the oxygen from the lamallae. The gill arch, on the other hand, acts as a form of muscle which holds … the structures of the gills together. ~Sincerely, A Smarty pants :). + 21 others found this useful.
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Fish - Structure and Function Oxygen dissolved in the water is absorbed by the gills. The movements of the mouth floor and operculum are co-ordinated to produce a stream of water, in through the mouth, over the gills and out of the operculum. There are usually four gills on each side consisting of a curved bony gill-bar bearing many fine filaments.
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Gill A gill (/ɡɪl/) is a respiratory organ found in many aquatic organisms that extracts dissolved oxygen from water and excretes carbon dioxide.The gills of some species, such as hermit crabs, have adapted to allow respiration on land provided they are kept moist.he concentration of oxygen in water is lower than air and it diffuses more slowly. In fresh water, the dissolved oxygen content is approximately 8 cm 3 /L compared to that of air which is 210 cm 3 /L. Water is 777 times more dense than air and is 100 times more viscous.
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Chapter 42 - Circulation and Gas Exchange Oxygen dissolved in the surrounding water diffuses across the thin epithelium covering the gills and into a network of tiny blood vessels (capillaries).  At the same time, carbon dioxide diffuses out into the water.
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Definitions &Translations A fish is any member of a paraphyletic group of organisms that consist of all gill-bearing aquatic craniate animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish, as well as various extinct related groups.ost fish are ectothermic (cold-blooded), allowing their body temperatures to vary as ambient temperatures change, though some of the large active swimmers like white shark and tuna can hold a higher core temperature. Fish are abundant in most bodies of water.
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Respiratory system In most fish, and a number of other aquatic animals (both vertebrates and invertebrates) the respiratory system consists of gills, which are either partially or completely external organs, bathed in the watery environment.
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Definitions &Translations For other uses, see Breath (disambiguation). For other uses, see Breathing (disambiguation). Breathing is the process that moves air in and out of the lungs, or the diffusion of oxygen and carbon dioxide to and from the external environment into and out of the blood through other respiratory organs such as gills.
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- Function of fish gills. To preform breathing for the orgainsm that lives under water. (Listen everyone!... go to National Geographic for kids, or the regular one to find a mor … e specific and general info. on this subject. To find it type on google national geographic or National geographic.he gill filaments are the hair-like structures on the gills which absorb the oxygen from the lamallae. The gill arch, on the other hand, acts as a form of muscle which holds … the structures of the gills together. ~Sincerely, A Smarty pants :).
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- chest cavity [the ~] noun the chest cavity – the cavity in the vertebrate body enclosed by the ribs between the diaphragm and the neck and containing the lungs and heart 1 the chest cavity; the thoracic cavity – the cavity in the vertebrate body enclosed by the ribs between the diaphragm and the neck and containing the lungs and heart 1 chest cavity [the ~] noun
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Definitions &Translations Freebase(0.00 / 0 votes)Rate this definition: Pulmonata. The Pulmonata, or pulmonates, are an informal group of snails and slugs characterized by the ability to breathe air, by virtue of having a pallial lung instead of a gill, or gills.
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ventilation Definition of ventilation. 1  1 : the act or process of ventilating. 2  2a : circulation of air a room with good ventilationb : the circulation and exchange of gases in the lungs or gills that is basic to respiration. 3  3 : a system or means of providing fresh air.
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- foot (noun) a muscular organ that a mussel uses to anchor itself in the substrate or move from one place to another. gills (noun)